Shares of logistics companies such as VRL Logistics, Snowman Logistics, GATI and Allcargo Logistics etc advanced up to 10% in an otherwise flat market after Finance Minister Arun Jaitley announced that switch-over to Goods and Services (GST) will happen from June 30 midnight, and that industry must be prepared for short-term challenges on GST rollout. Snowman Logistics surged as much as 9.7% to Rs 59, while VRL Logistics rallied 6% to Rs 352 on the BSE.